We architect and deploy battle-tested smart contracts that form the immutable foundation of your protocol. Our development process is built on OpenZeppelin standards and follows formal verification principles to eliminate vulnerabilities before deployment.
LABS
Services
EVM On-Chain KYC Protocol Development
We build custom, gas-optimized smart contract systems for issuing, verifying, and managing KYC status directly on Ethereum and EVM L2s. Enable compliant access to DeFi and tokenized assets with a secure, on-chain identity layer.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by certified auditors for your Web3 application.
- Custom Logic: Tailored
Solidity 0.8+/Rustcontracts for DeFi, NFTs, DAOs, and enterprise use cases. - Security-First: Every contract undergoes internal audit against the SWC Registry, with optional third-party audit coordination.
- Gas Optimization: We achieve up to 40% lower gas costs through efficient data structures and opcode-level tuning.
- Full Lifecycle: Development, testing (
Hardhat/Foundry), deployment scripting, and upgradeability planning usingTransparent ProxyorUUPSpatterns.
Deploy with confidence. We provide a comprehensive audit report and verified source code on Etherscan for every contract, ensuring transparency and trust for your users.
key-features-cards
ENTERPRISE-GRADE ON-CHAIN COMPLIANCE
Core Capabilities of Our KYC Protocol Development
We architect modular, gas-optimized KYC protocols that integrate seamlessly into your dApp's user flow, ensuring regulatory compliance without sacrificing user experience or decentralization.
01
Modular Identity Verification
Integrate a flexible stack of verification methods—from basic email/SMS to biometric checks and government ID validation—via a single, unified smart contract interface.
5+
Verification Methods
< 1 day
Integration Time
02
Gas-Optimized On-Chain Registry
Deploy a custom ERC-734/ERC-735 compatible identity registry with Merkle tree proofs, reducing verification gas costs by up to 70% compared to naive storage patterns.
~70%
Gas Reduction
ERC-734/735
Standards
03
Privacy-Preserving Proofs
Implement Zero-Knowledge (ZK) attestations using Circom and SnarkJS, allowing users to prove KYC status without revealing underlying personal data on-chain.
ZK-SNARKs
Tech Stack
0 Data Leakage
On-Chain
04
Automated Risk & Sanctions Screening
Connect to real-time AML/CFT data providers via decentralized oracles to perform automated sanctions list and politically exposed person (PEP) checks during onboarding.
Real-time
Screening
Chainlink
Oracle Network
05
Compliance Rule Engine
Define and enforce jurisdiction-specific rules (e.g., geoblocking, tiered limits) through upgradable smart contracts, managed via a secure admin dashboard.
Jurisdiction-Based
Rules
Upgradable
Architecture
06
Audited & Secure by Design
Receive protocol code audited by leading security firms, built with OpenZeppelin libraries and following ConsenSys Diligence best practices for maximum security.
Third-Party
Security Audits
OpenZeppelin
Libraries
benefits
DELIVERABLES & DIFFERENTIATORS
Business Outcomes: Why Build On-Chain KYC with Chainscore
We deliver a production-ready, modular on-chain KYC protocol that accelerates your compliance timeline while reducing operational overhead. Here are the concrete outcomes you can expect.
01
Accelerated Time-to-Market
Deploy a fully audited, modular KYC protocol in under 4 weeks. Our pre-built compliance modules for ERC-20, ERC-721, and DeFi applications eliminate 6+ months of development time.
< 4 weeks
Deployment Time
6+ months
Dev Time Saved
02
Enterprise-Grade Security & Audits
Build on a foundation of trust. Our core protocol and smart contracts are audited by leading firms like Trail of Bits and Halborn, ensuring institutional-grade security for your users' credentials.
100%
Audit Coverage
Zero
Critical Bugs
03
Gas-Optimized & Cost-Effective
Reduce user onboarding costs by up to 70% with our gas-optimized verification logic. Our architecture uses minimal on-chain storage and batched transactions to keep fees low at scale.
Up to 70%
Cost Reduction
< 100k gas
Avg. Verification
05
Seamless User Experience
Implement one-click, non-custodial KYC that users trust. Our protocol supports privacy-preserving ZK proofs and reusable credentials, removing friction without compromising security.
< 60 sec
User Onboarding
Non-Custodial
Credential Model
06
Scalable Infrastructure
Handle millions of verifications with 99.9% uptime SLA. Our horizontally scalable off-chain verifier nodes and multi-chain compatibility (EVM L1/L2) ensure reliability as you grow.
99.9%
Uptime SLA
Multi-Chain
EVM Compatible
Choose the Right Level of Support
Structured Development Tiers for On-Chain KYC
Compare our service packages to find the optimal balance of features, support, and cost for your EVM-based KYC protocol development.
| Feature / Capability | Starter | Professional | Enterprise |
|---|---|---|---|
Custom KYC Smart Contract Suite | |||
Gas-Optimized On-Chain Verification | |||
Integration with 3rd-Party Providers (e.g., Persona, Onfido) | |||
Automated Compliance Rule Engine | |||
Multi-Chain Deployment (Ethereum, Polygon, Arbitrum, Base) | 1 Chain | Up to 3 Chains | Unlimited |
Smart Contract Security Audit & Report | Basic Review | Full Audit by Partner Firm | Full Audit + Formal Verification |
Deployment & Configuration Support | Documentation Only | Hands-On Support | Dedicated Engineer |
Post-Launch Monitoring & Alerting | Self-Service | 6 Months Included | 24/7 with 99.9% SLA |
Priority Support & Response Time | Community (72h) | Business (24h) | Dedicated (<4h) |
Typical Delivery Timeline | 4-6 Weeks | 8-12 Weeks | 12+ Weeks |
Starting Project Investment | $25,000 | $75,000 | Custom Quote |
how-we-deliver
TRANSPARENT & PREDICTABLE
Our Development Process: From Specification to Mainnet
A structured, security-first approach to deliver compliant, production-ready EVM KYC protocols. We provide clear milestones, regular audits, and full transparency from day one.
01
Requirement Analysis & Specification
We conduct a deep-dive workshop to define your KYC logic, compliance rules, and integration points. Deliverables include a technical specification document and a detailed project roadmap.
2-3 days
Workshop Duration
1 Week
Spec Finalization
02
Architecture & Smart Contract Design
Our architects design a modular, upgradeable system using patterns like Diamond Proxy (EIP-2535). We define data structures, access control, and gas optimization strategies before a single line of code is written.
OpenZeppelin
Security Base
EIP-2535
Upgrade Pattern
03
Secure Development & Internal Auditing
Development in Solidity 0.8+ with comprehensive unit and integration testing (Hardhat/Foundry). Every module undergoes a rigorous internal security review before external audit.
100%
Test Coverage
2 Rounds
Internal Audit
05
Testnet Deployment & Integration Testing
Full deployment on Sepolia or Goerli testnets. We execute end-to-end integration tests with your front-end and backend systems, simulating real-world user flows and edge cases.
> 500
Test Scenarios
Full E2E
Integration Suite
06
Mainnet Launch & Monitoring
We manage the production deployment, configure real-time monitoring (e.g., Tenderly, OpenZeppelin Defender), and provide 24/7 incident response support for the initial stabilization period.
24/7
Launch Support
99.9%
Uptime SLA
Technical & Commercial Insights
Frequently Asked Questions on On-Chain KYC Development
Get clear, specific answers to the most common questions CTOs and founders ask when evaluating an on-chain KYC development partner.
We deliver production-ready, audited on-chain KYC protocols in 4-8 weeks from kickoff. A standard deployment with core compliance rules, admin dashboard, and integration support takes 4 weeks. Complex implementations with custom verification logic, multi-chain support, or novel privacy features extend to 8 weeks. We provide a detailed sprint-by-sprint timeline during the discovery phase.
ENQUIRY
Get In Touch
today.
Our experts will offer a free quote and a 30min call to discuss your project.
NDA Protected
Confidentiality24h Response
Time to ValueDirectly to Engineering Team
No Sales Fluff10+
Protocols Shipped
$20M+
TVL Overall